HBASE-9771 [WebUI] Humanize store and blockcache statistics on RS

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1532598 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9773 Master aborted when hbck asked the master to assign a region that was already online

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1532633 13f79535-47bb-0310-9956-ffa450edef68